One thing worked for me is compartmentalizing
Yes google services are too good to be replaceable .
Have multiple profiles (one hardened privacy aware other is your existing profile )for browsers,OS,Computers , phones ,mails,messenger apps.Each profile disconnected from other (use different internet pipes)so that ads will target you make a profile of you but both are not interlinked .
Its a bit of taxing for initial setup once its there then things will be smooth .
I have what I call "privacy traps" like sharing random emails/phone number to a service and see how/where it follows you.This will help you to profile what are the query terms,PII info for these services to build a profile of yours etc ..
